Apparatus for thermally processing yarns



Dec. 16, 1958 w. A. SEEM ETAL 2,364,229

APPARATUS FOR THERMALLY PROCESSING YARNS Filed June 5, 1957 4Sheets-Sheet 1 l i E--- NICHOLAS J.STODDARD KIRKLAND H. GIBSON HARRY B.MILLER RICHARD G. HILBERT BY WW ATTYS.

Dec. 16, 1958 w. A. SEEM ET AL APPARATUS FOR THERMALLY PROCESSING YARNS4 SheetsSheet 2 Filed June 5, 1957 INVENTORS m w T T AN 1 W1 MOB m ET IES J ASW mA m & OL A WHKWH mmAm NKHR Dec. 16, 1958 w. A. SEEM ET AL2,854,229

APPARATUS FOR THERMALLY PROCESSING YARNS Filed June 5, 1957 4Sheets-Sheet 3 INV ENTORSZ LWARREN A. SEEM NICHOLAS J. STODDARD KIRKLANDH.GIBSON HARRY B. MILLER RICHARD G. HILBERT ATTYS 4 Sheets-Sheet 4' 0 52 f 4 0 7 5 5 WwHrIT\| .IN 7 9 I 5 4 M .UII h L 6 m w L i L 5 v 0 In "5#/.m 73 I c I 2 w 7 6 W 2% J m m 4 Iv. W W MI W L L :1. L A A Y I A 6 00 n I 4 IUH A THIN 5 I m M 6, W

Dec. 16, 1958 w. A. SEEM ETAL APPARATUS FOR THERMALLY PROCESSING YARNSFiled June 5, 1957 INVENTORS' WARREN A. SEEM NICHOLAS J. STODDARDKIRKLAND H. GIBSON HARRY B. MILLER RICHARD G. HILBERT BY WW AT'TYS,

with and/ or without correlated heat.

United tes Patent APPARATUS FOR THERMALLY PROCESSING YARNS Warren A.Seem, Chester Springs, and Nicholas J. Stod- (lard, Berwyn, Pa., andKirkland H. Gibson, North Kingstown, Harry B. Miller, Lakewood, andRichard G. H lbert, Smithtieid, R. 1., assignors to Universal WindingCompany, Cranston, R. I., a corporation of Massachusetts ApplicationJune 5, 1957, Serial No. 663,726 17 Claims. (c1. s7 34 The presentinvention relates to apparatus for thermally processing continuous anddiscontinuous multifilament and monofilament yarns. The invention hasparticular utility in reprocessing torque stretch yarns and othertextured yarns.

The primary object of the present invention is to provide an improvedapparatus for processing yarns to produce regulated or controlledcharacteristics in the processed yarn. Yarns having thermoplasticqualities mani fest certain characteristics, but also possess certainlatent characteristics, which are induced in the yarn by the processingof them. The latent characteristics may become activated or manifestthemselves during subsequent operations or storage of the yarn or of thegray or finished fabric formed therefrom.

Yarns have been thermally processed for a number of years indiscontinuous operations where the yarn is subjected to heat while it isin a package such as a spool, bobbin or the like. When thermallyprocessing yarn in packages, the position of each yarn section in thepackage determines the amount of tension and lateral com-.

pression upon it. Throughout the package the amount of tension andlateral compression varies and accordingly, some sections of the yarnhave different manifest characteristics than other sections, thusproducing a non-uniform yarn. The non-uniform yarn, when it isfabricated, may cause streaks or other undesirable irregularities in thefabricsv The present invention provides apparatus for thermallyprocessing yarn to uniformly control or regu late its characteristics.

More specifically, the present invention provides apparatus forthermally processing yarn having thermoplastic qualities during itscontinuous travel, wherein the yarn is subjected to controlled degreesof tensile stress, The apparatus also provides means for imparting atwist to the yarn following its processing.

The preferred embodiment of the present invention constitutes adown-twister which operates in a conventional manner to impart twist tothe yarn as it is wound on the take-up package. The apparatus of thepresent invention also includes accurately regulatable tensioncontrolling devices along with a heating element. The tensioncontrolling devices may take various forms, and the heatting devices maybe of different forms.

All of the objects of the present invention are more fully set forthhereinafter With reference to the accompanying drawings wherein:

Fig. 1 is a vertical transverse sectional view illustrating an apparatusmade in accordance with the present invention;

Fig. 2 is a fragmentary view in front elevation of the apparatus shownin Fig. 1;

Fig. 3 is a fragmentary view in perspective of the heating elements ofthe apparatus shown in Figs. 1 and 2;

Fig. 4 is an enlarged view taken in section on line 4-4 of Fig. 3;

Figs. 5, 6, and 7 are detached perspective views of selected contactplates which may be used in conjunction with the heating elementsillustrated in Figs. 3 and 4;

Fig. 8 is a view in perspective of a yarn feed device of the apparatusshown in Figs. 1 and 2;

Fig. 9 is a vertical transverse sectional view diagrammaticallyillustrating the travel of the yarn through the apparatus shown in Figs.1 and 2;

Fig. 10 is a view similar to Fig. 9 in front elevation;

Fig. 11 is a fragmentary view similar to Fig. 9 at a reduced scaleshowing a modification within the scope of the present invention;

Figs. 12 and 13 are fragmentary views similar to Figs.

1 and 2 of the modification illustrated diagrammatically The apparatusof the present invention provides means for mounting one of more supplypackages from which the yarns are drawn and advanced to a take-uppackage where the yarn is twisted as it is wound onto the package.Tension controlling devices are mounted on the apparatus intermediatethe supply and take-up packages to apply selected degrees of tension tothe yarn during its travel from the supply package to the take-uppackage. A heater is provided to heat the yarn as it is continuouslytraveled from the supply to the take-up packages. Regulating devices areprovided for the tension controlling devices and the heating devices toenable correlation of the tension and heat applied to the yarn tothereby provide accurate and precise control of the physicalcharacteristics of the yarn produced by the correlated heat and tension.The invention has particular utility in practicing the methods disclosedin the copending U. S. patent applications of Stoddard and Seem, SerialNumber 401,803, filed January 4, 1954, now Patent Number 2,803,108, andSerial Number 653,953, filed April 19, 1957.

Referring nowto the drawings, the apparatus illustrated in Figs. 1 and 2comprises a stationary frame 20 forming at its upper end a creel 21 forreceiving one or more yarn packages. In the present instance, the creel21 comprises a plurality of outwardly projecting pins or arms 22,projecting towards thread guide loops 23 having associated therewithdisc tension controlling devices 24 and yarn rollers 25. In the presentinstance, the pins 22 are mounted in tiers of six in each. section ofthe creel 21. Underlying the guide loops 23, disc tensions 24 androllers 25, is a guide bar 26 extending across the full width of themachine. Below the creel 21, the frame 20 mounts stop motion drop eyes27. The drop eyes 27 operate in a conventional manner to interrupt theadvance of the yarns in the associated section of the machine in theevent of breakage or run-out of the yarns passing therethrough. A secondguide bar 28 extends across the full width of the machine to engage theyarns when they are drawn from the side of the package and bypass theguide loops 23, disc tensions 24 and rollers 25. The creel and stopmotion drop eyes are conventional elements of a down-twister and are notdescribed in further detail.

In accordance with the present invention, a second tension controllingdevice is mounted on the frame 20 below the stop motion drop eyes 27. Inthe illustrated embodia ment of the invention, the second tensioncontrolling device is shown at 30 and comprises a housing rotatablymounting large and small feed rolls 31 and 32 respectively. The feedrolls 31 and 32 are geared to a drive shaft 33 through a clutch (notshown) in the housing. A nip r011 34 is mounted in engagement with thefeed Patented Dec. 16, 1958 roll 31 and is guided for a verticaldisplacement thereagainst by a guide member (see Fig. 8). The weight ofthe roll 34 biases it against the feed roll 31 to firmly nip the yarnagainst the feed roll and provide a positive drive for the yarn by thefeed roll. The yarn from the stop motion drop eye 27 is guided intoengagement with the feed roll 32 by a pigtail 36 mounted on the housingof the tension device 30.

Heating means for the yarn is mounted on the frame 20 below the tensioncontrolling device 30. To this end, an insulating block 44) is mountedon the frame 20 by a channel 39 as clearly shown in Figs. 1 and 4, andextends across the full width of the machine. The channel 39 mounts aheating plate 41, which may extend across several sections of themachine or may be coextensive in width with only one section. Theheating plate 41 embodies electrical heater elements 43 which areenergized by electric conductors (not shown) embedded in the insulatingblock 4!} and connected to a source of electric current. A thermostat 44is mounted in the heating plate 41 and connections are provided tocontrol the supply of energy to the heating element in response to thethermostat 44. Substantial heat loss to the surrounding atmosphere fromthe heating plate 41 is prevented by an insulated cover element 45surrounding the plate 41 on opposite sides of the path of travel of theyarn thereacross. If desired, the heating plate 41 may be provided witha grooved contact element 46 secured to the plate to supply heat to theyarns in the groove thereof both by conduction and by radiation. Theinsulating block and the insulating cover thermally isolate to asubstantial degree the path of travel of the yarn from the surroundingatmospheric conditions, and the thermostat 44 operates to control thetemperature of the plate 41'and element 46 with a high degree ofaccuracy to guard against changes in temperature due to changes inambient temperature and the change in the rate of heat absorption by theyarn traveling thereover. Yarn separators 47 and 48 are mounted on thechannel 39 above and below the heating plate 41 to direct the pluralityof yarn ends passing over the plate in parallel relation and guardagainst inferengagement of adjacent yarn ends and consequentinterference of the yarn ends with the travel of the adjacent yarn ends.

Means is provided following the heater to supply oil or other liquid tothe yarn after passage over the heating zone. In the present instance,the liquid applicator or lubricator comprises a driven roll 50 mountedfor rotation with a shaft 51 extending the full width of the apparatus.The shaft is journaled for rotation on the frame 20 as indicated at 52.The driven roll 50 picks up oil or other liquid from a supply 54 thereof(see Fig. 9) contained in a trough 53 mounted on the frame 20. The shaft51 operates to drive the roll 50 at a sufficient rate to carry liquidfrom the supply 54 to the yarn traveling past the roll 50 in tangentialengagement therewith.

In accordance with the invention, feed means or a second tensioncontrolling device is provided which cooperates with the tensioncontrolling device 30 to insure a proper tension on the yarn as itpasses through the heating zone aiforded by the heater assembly. To thisend, a feed roll assembly is mounted on the frame 20 below the liquidapplicator roll 50. The assembly 60 comprises a housing rotatablymounting large and small feed rolls 61 and 62, which are geared to adrive shaft 63 through a clutch (not shown) in the housing. A nip roll64 is mounted in engagement with the feed roll 61 to insure engagementof the yarn with the feed roll. The nip roll 64 is mounted for verticalsliding movement in a guide element 65 similar to the guide element 35,and is biased by its own weight to engage against the feed roll 61. Theyarn is guided from the roll 50 into engagement with the feed roll 62 bymeans of a pigtail eye 66 mounted on the housing 60. The yarn leavingthe feed means 60 is passed over a stop motion roller 67 which operatesto disengage the clutches of the feed roll assemblies 30 and 60 when theyarn breaks.

Conventional means is provided to collect the yarn from the feed means60 and twist it as it is wound on the take-up package. To this end, aconventional yarn twister spindle 70 is mounted on the frame 20 forrotation by 'a belt 71. A traveler ring 72 is mounted for verticalreciprocation on the frame as indicated at 73, and a conventionalcentering eye 74 is provided. The usual traveler 75 is engaged with thetraveler ring 72 to apply the desired tension to the yarn as it is fedby the feed means 60 to the packages on the spindle 70.

Referring now to Figs. 9 and 10, the apparatus operates to thermallyprocess several strands of yarn and twist them together while windingthem on the take-up package. As shown in these figures, supply packagesS are mounted on the arms 22 of the creel 21 and the yarns Y from thepackages S are threaded through the loop guide 23, the disc tension 24,over the roller 25 and guide bar 26 to the stop motion drop eyes 27.

From the stop motion drop eyes, the yarns are passed in side by siderelation to the collecting eye 36 on the tension controlling device 30,and are wrapped around the feed rolls 31 and 32 a plurality of times.The nip roll 34 insures that the yarns are engaged with the feed roll tobe positively driven thereby.

From the feed rolls 31 and 32, the yarns are passed to the threadseparator 47 which separates the individual yarns Y for passage over theheater contact element 46. The yarns are maintained in parallel relationon the heater contact element 4-6 by the second thread separator 48, andare held against the roll 50 by the pigtail eye 66 of the tensioncontrolling device 60.

After being lubricated by the roll 5%), the yarns are wrapped severaltimes around the feed rolls 61 and 62 of the device 66, firm engagementof the yarns with the feed roll 61 being insured by the nip roll 64. Theyarns are then passed over the stop motion roller 67, through thecentering eye 74, the traveler 75, and are wound up on the take-up spoolT, as it is rotated by the spindle 70.

To insure the proper tension on the yarn as it passes the contactelement 46, the rotary speed of the feed rolls in the tensioncontrolling devices 30 and 60 are correlated. To this end, as showndiagrammatically in Fig. 2, the shafts 33 and 63 are driven from themain drive mechanism through gear trains indicated at 81 and 82. Thegear trains 81 and 82 include suitable change gears or other variabletransmission means to afford proper correlation of the speeds of theshafts 33 and 63. The spindles 70 and the traveler ring motion 73, aredriven in the conventional manner, as indicated diagrammatically at 83from the main drive 80. Likewise, the applicator roll shaft 51 is drivenby the main drive mechanism, as indicated at 84.

Thus, as the yarn is drawn from the supply packages S, an initialtension is applied by the disc tension 24.

Thereafter, as the yarn passes the tension controlling device 30, adifferent tension may be applied to the yarn in accordance with theratio between the speed of the shaft 33 and 63. For example, if theshaft 33 is driven faster than the shaft 63, the yarn is overfed by thefeed rolls 31 and 32, and minimum tension is applied to the yarn as itis traveled over the heater plate 41. Suecessively greater tension canbe applied to the yarn in this portion of its travel by decreasing thespeed of the shaft 33 relative to the shaft 63, until the shaft 63 istraveling sufficiently faster than the shaft 33 to exert maximum tensionon the yarns. The amount of tension on the yarn is limited by thestrength of the yarn at the temperature to which the yarn is heated bythe heater element 46. After the yarn passes the feed rolls 61 and 62,the tension on the yarn is that applied by the traveler 75.

In the operation of the apparatus, the heat applied to the yarn iscorrelated with the tension to produce the desired results. To this end,the thermostat 44 is adjusted to maintain the heater plate 41 at thetemperature necessary to heat the yarn traveling over the contactelement 46 to the desired temperature. The thermostat is adjusted by anadjusting screw 86. Access to the adjusting screw 86 is provided by anaperture 87 in the insulating cover 45 (see Fig. 2). A reading of thetemperature of the heater plate 41 is taken from a thermometer block 88mounted on the heater plate 41 adjacent the thermostat 44. Access to thethermometer block is provided by an aperture 89 in the insulating cover45 surrounding the block 88 whereby a thermometer 90 may be engaged inthe thermometer block 88 when adjusting the thermostat 44. It is notedthat the reading given by the thermometer 90 does not indicate thetemperature of the yarns passing over the contact element 46, but onlyindicates the temperature of the heater plate 41, but also upon the rateof travel of the yarn across the contact element 46.

The contact element 46 is formed with a relatively wide groove therein.If desired, a flush contact element 46a may be substituted for theelement 46. The contact element 46a may be preferred in certaininstallations, or When handling specified yarns, in lieu of therelatively widely grooved element 46. When processing only one or twostrands of yarn in the apparatus of the present invention, it may bepreferred to use a contact element which has a narrow groove. Such anelement is shown at 46b in Fig. 6. This element may be mounted in lieuof the element 46 on the heater plate 41 to provide a combined contactand radiant heat upon the yarn traveling across the heater. To increasethe radiant heat upon a plurality of yarns over that provided by thegrooved contact element 46, a contact element 46c may be mounted in theplace of the contact element 46. The contact element 460 is providedwith a plurality of grooves wherein each yarn traveling across thecontact element is contained within a single groove to thereby receivefull radiant heat as well as conductive heat. In the drawings, thecontact element has been shown as detachably mounted on the heater plate41, but it is within the scope of the invention to form the contactelement integrally with the heater plate 41. It is preferred, however,to removably mount the contact element in order to provide forreplacement after prolonged periods of use.

Various modifications are possible within the scope of the presentinvention. For example, if greater tension is desired in the yarn in theinitial stage of its travel, a tension controlling device similar to thetension controlling devices 30 and 60 may be mounted on the frame 20. As

shown in Figs. 11, 12 and 13, the tension controlling device may bemounted intermediate the stop motion drop eyes 27 and the tensioncontrolling device 30 as indicated at 90. The tension controlling device90 comprises feed rolls 91 and 92 which are driven by a shaft 93 througha clutch (not shown) in the housing. A nip roller 94 is provided and isslidably mounted in the housing as indicated at 95. A suitable pigtailguide 96 may also be provided.

When modified in this manner, the yarns from the supply packages on thecreel 21 need not pass through the guides 23, disc tensions 24 androllers 25, and guide bar 26. Instead, the yarns Y may be taken from theside of the packages S as indicated in Fig. 11 and passed over a guidebar 28 directly to the stop motion drop eyes 27. In this embodiment ofthe invention, the tension in the yarn during the first stage of itstravel through the apparatus is controlled by controlling the relativespeed of the shafts 93 and 33. To accomplish this control, the shaft 93is driven from the main drive, as indicated schematically at 99 in Fig.13 by a gear train including change gears or other variable transmissionmeans. Thus, by regulating the relative speeds of the shafts 93. 33, and63, the tension on the yarn during its travel from the feed rolls 91 and92 to the feed rolls 61 and 62, may be accurately controlled to providetwo degrees of tension.

6 Other modifications of the apparatus are possible within the scope ofthe invention. For example, the heaters need not take the form of heaterplates as shown in Figs. 3 to 7, but may be embodied in the form ofradiant heater devices wherein the yarn is heated solely by radiantheat. The radiant heater may be in the form shown in Figs. 14

and 15 which is similar to the heater described and claimed in thecopending application of Nicholas J. Stoddard and Warren A. Seem, SerialNumber 503,672, Heating Device for Use in Processing Textile Yarns.

There is a single radiant heating device 100 for each section of themachine. The device 100 is electrically heated, current being conductedto it through two fixed horizontal bus bars 102 and 103 which take theform of angle irons mounted on the frame 20 of the machine by insulatingmounting means (not shown). The device 100 is mounted on the machine bythe bus bars and screws 104 and 105. The device comprises a cylindricalcasing 106 which is supported by the screws 104 and and insulatingbushings 107 and 108 respectively. A tube 111 of small diameter and boreis mounted within the cylindrical casing 106 to define an elongatedrestricted passage or zone through which the yarn is passed. The tube isexteriorly insulated and is surrounded by a coil 112 of resistance wire.The interior of the casing 106 contains electric and thermal insulationwhich may be of fiberglass or insulating granules. At the top and thebottom of the casing 106, covers 113 and 114 are provided which areinsulated as indicated at 115 and 116 respectively and which mount thecentral tube 111 coaxially within the housing 106. Wear-resistingbushings 117 and 118 are fitted over the opposite ends of the tube 111which prevents cutting of the tube by the yarn passing through it.

The opposite ends of the heating coil 112 are electrically connected tothe screws 104 and 105 and thereby to the bus bars 102 and 103 by meansof leads, 121 and 122. If desired, one of the leads may include a switch(not shown) for disconnecting the coil 112 from the bus bars. It isnoted that the winding pitch of the heating coil increases progressivelyfrom the opposite ends of the tube progressively toward the center. As aresult, a greater amount of electrical energy is provided at the entrantand exit ends of the tube, thereby making possible the maintenance of adesired uniform temperature throughout the tube and the use of a muchshorter tube than otherwise would be required. A thermostatic sensingmeans 124 is mounted in the heating device 100 to control the voltageapplied to the coil 112 to uniformly heat the yarn passing through thetube 111 to the desired temperature.

It is understood that the illustrated apparatus is de- I signed to beadjusted for processing yarn under any prescribed conditions, but in theevent that it is desired to operate the apparatus under only a singleset of conditions, many of the control elements may be omitted orby-passed.

While particular embodiments of the present invention have been hereinillustrated and described, it is not intended to limit the invention tosuch disclosure, but changes and modifications may be made therein andthereto within the scope of the following claims.

We claim:

1. Apparatus for processing yarns comprising a creel for mounting atleast one supply package of said yarn, a twister spindle, a travelerring, a traveler, and feed means to ravel yarn from said supply packageand feed the same at a preselected speed to the traveler and takeuppackage, spaced guide means intermediate said creel and said twisterspindle to direct the yarn in a generally straight-line path during atleast a portion of its travel, and heater means intermediate said spacedguide means operable to uniformly heat the yarn to a selectedtemperature during said portion of its travel.

2. Apparatus according to claim 1 wherein said spaced guide means aremounted intermediate said creel and said feed means.

3. Apparatus according to claim 2 including tension controlling meansintermediate said creel and said feed means to apply a selected degreeof tension to the yarn drawn from said supply package during a firstportion of its travel from said supply package to said feed means.

4. Apparatus according to claim 3 including a second tension controllingmeans intermediate said first tension controlling means and said heatermeans to apply a second selected degree of tension to the yarn during asecond portion of its travel from said supply package to said feed meansand including said portion of its travel between said spaced guidemeans.

5. Apparatus according to claim 3 wherein said tension controlling meanscomprises at least one feed roller and means to drive said roller at aspeed relative to the speed of the feed means for the yarn to producethe desired degree of tension.

6. Apparatus according to claim 4 wherein both said first and saidsecond tension controlling means comprise a feed roller for frictionallyengaging the traveling yarn and drive means, the drive means of saidfirst tension controlling means driving its roller at a predeterminedperipheral speed relative to the roller of said tension controllingmeans, and the drive means of said second tension controlling meansdriving its roller at predetermined peripheral speed relative to thefeed means.

7. Apparatus according to claim 5 wherein said tension controlling meansincludes a nip roller mounted'adjacent said feed roller for engagementtherewith.

8. Apparatus according to claim 7 wherein said nip roller is mountedabove said feed roller for free rotation therewith and is slidablevertical-1y under its weight into engagement with said feed roller.

9. Apparatus according to claim 1 wherein said heater means comprises aheated contact plate for engaging the yarn.

10. Apparatus according to claim 9 wherein said heater plate is formedwith a flush arcuately convex surface for engaging the yarn.

11. Apparatus according to claim 9' wherein said heater plate is formedwith a grooved arcuately convex surface for receiving the yarn.

12. Apparatus according to claimll wherein said plate comprises a seriesof grooves disposed in spaced parallel relation across said plate.

13. Apparatus according to claim 1 wherein said heater comprises aradiant heater having an elongated heated tube for passing the yarn andmeans to guide the yarn through said tube out of contact therewith.

14. Apparatus for processing yarns comprising a frame, a creel at theupper portion of said frame for mounting a plurality of supply packagesof said yarn, a plurality of twister spindles, traveler rings,travelers, and feed means at the bottom of said frame to ravel yarn fromsaid supply packages and feed the same at a preselected speed to thetraveler and on a take-up package, a like number of spaced guide meansmounted on said frame intermediate said creel and said twister spindlesto direct the yarns in generally straight-line paths during a portion oftheir travel, and heater means intermediate each of said spaced guidemeans operable to uniformly heat the yarns to a selected temperatureduring said portion of its travel.

15. Apparatus according to claim 14 wherein said yarn twister spindles,traveler rings, and travelers are mounted at spaced intervalstransversely of said frame, and wherein further said heater meanscomprises a heater plate mounted transversely of said frame to overliesaid plurality of spindles, said heater plate including a contactelement for each twister spindle positioned on said plate in generallyvertical alignment with said spindle to heat the yarn traveling to thetake-up package thereon.

16. Apparatus according to claim 15 including a thermostat mounted onsaid heater plate operable to control the temperature thereof for thefull width of said plate.

17. Apparatus according to claim 16 including a thermometer blockmounted on said heater plate adjacent said thermostat.

No references cited.

UNITED STATES PATENT OFFICE Certificate Patent No. 2,864,229 PatentedDecember 16, 1958 Warren A. Seem, Nicholas J. Stoddard, Kirkland H.Gibson, Harry B. Miller, Richard G. Hilbert Application having been madejointly by Warren A. Seem, Nicholas J. Stoddard, Kirkland H. Gibson,Harry B. Miller and Richard G. Hilbert, the inventors named in thepatent above identified, and Leesona Corporation, Warwick, Rhode Island,a corporation of Massachusetts, the assignee, for the issuance of acertificate under the provisions of Title 35, Section 256 of the UnitedStates Code, deleting the names of the said Kirkland H. Gibson, Harry B.Miller and Richard G. Hilbert from the patent as joint inventors, and ashowing and proof of facts satisfying the requirements of the saidsection having been submitted, it is this 2nd day of June 1964:,certified that the names of the said Kirkland H. Gibson, Harry B. Millerand Richard G. Hilbert are hereby deleted from ghe dstld patent as jointinventors with the said Warren A. Seem and Nicholas J.

to ard.

EDWIN L. REYNOLDS, First Assistant Commissioner 0 f Patents.

Disclaimer 2,864,229.-Warren A. Seem, Chester Springs, and Nicholas J.Stoddard,

' Bei'wyn, Pm, and Kirkland H. Gibson, North Kingstown, H arry B.

Miller, Lakewood, and Richard G. Hilbert, Smithfield, RI. APPA- RATUSFOR THERMALLY PROCESSING YARNS. Patent dated Dec. 16, 1958.

Disclaimer filed Sept. 25, 1963, by the assignee, Leesona Corporation.

Hereby enters this disclaimer to claims 1, 2, 3, 4, 5, 7 and 14 of saidpatent.

[Oyfioial Gazette December 3, 1963.]

